People whoare too concerned with how well they are doing will be less successful andfeel less competent than those who focus on the task itself... Somepsychologists call it a conflict between egoorientation, or between extrinsicand intrinsic motivation...
In oneof our concert grand pianos, 243 taut strings exert a pull of 40,000 poundson an iron frame. It is proof that out of great tension may come great harmony.